Rules per field
Every field has its own rules. Pick a field below to show its specific rules, together with the general safety and participation rules that apply on every field.
Check your joules with the Joule / FPS calculatorField rules Fort Knox
Specific to Fort Knox
Field boundaries
The field is marked out with an orange border.
- It is not allowed to go beyond the markings or to shoot outside the field.
- Objects on the field must not be moved or removed.
- Windows and doors that are closed stay closed, doors that are open stay open.
- Zones taped off with red and white tape are off limits (safety).
- Outside the safe zone, safety glasses are mandatory at all times. No glasses means immediate removal without refund.
- The tunnels are only open from 15 May to 15 September. Access is managed by the marshalls (bats and municipal supervision).
Safe zone
- No magazines in the safe zone.
- Dry firing ("test shooting") is not allowed.
- Do not shoot across the safe zone.
- Do not take up too much space with your gear.
- Keep your stay in the covered safe zone during the game as short as possible.
Marshalls
- Marshalls are there to solve problems and watch over safety.
- Shooting at a marshall is not allowed.
- Marshall decisions are final and always stand.
- In case of disagreement, go to the Head Marshall or the organisation (Youseff/Mike).
Foul language, aggressive behaviour, drugs and alcohol
- Using or carrying drugs or alcohol is forbidden before, during, at the break and after the game.
- Offenders are removed and their name is shared with other organisations in Belgium and the Netherlands.
- Foul language and aggressive behaviour are not tolerated.
- Violations lead to immediate removal without refund.
Smoking and socialising
- Smoking and socialising only during the break or in the safe zone.
- No smoking or socialising during gameplay, except in the designated spots.
- Smoking on the playing field is forbidden.
Break times
- Breaks are announced with an air horn.
- First break from 11:30 to 12:30. Be ready at 12:20 for the restart at 12:30.
- A possible second break lasts 15 minutes at most (magazines, drinks, quickly back in).
Joule limits
Optional testing is possible from 07:45 to 08:45. Only airsoft replicas are allowed.
- Bolt action sniper: max 2.3 joules (0.40 g when in doubt).
- DMR class 1: max 1.7 joules (0.40 g when in doubt).
- DMR class 2: max 2.3 joules (0.40 g when in doubt).
- All others: max 1.2 joules with a ROF of max 25 BB/sec (0.30 g when in doubt).
- Shooting too hot at an in-game test means no more playing for the rest of the day.
- Random (stealth) checks are possible at any time. Over the limit means immediate removal.
Chrono procedure
- Report for the measurement.
- Test with your own BB weight (checking for straight shooting).
- The marshall corrects obvious hop issues.
- The actual measurement is done with the weight of your class.
DMR and sniper
- DMR class 1 (max 1.7 J): min. 20 m engagement distance, no shooting inside buildings (only from inside out), no full auto, no "trigger finger speed", only LOW and MID-cap magazines.
- DMR class 2 (max 2.3 J): min. 20 m engagement distance, no shooting inside buildings (only from inside out), no full auto, mandatory 2-second delay.
- Bolt action sniper (max 2.3 J): min. 20 m engagement distance, no shooting from inside to inside (inside to outside and outside to inside are allowed), hop-up set to your own BB weight during the FPS test.
- DMR classification only applies when ALL criteria are met: single shot/fixed, min. 80 cm length, stock ready to shoulder, magnifying optic, bipod, only real/low/midcap magazines and strictly one shot per trigger pull. Otherwise the general categories apply.
- General category: maximum ROF of 25 BB/sec.
Smokes
- Only Enola Gay and Dual Vent are allowed.
- Outdoor use only (not in buildings or tunnels).
- Do not throw them close to or against walls.
- During very dry spells (fire risk), smokes can be temporarily banned.
Pyro and allowed BBs
All hard-bang pyro and grenades are strictly forbidden.
- Allowed BBs: 101 inc, Xtreme Precision BIO, Green Devil, Hidd Eco, Mad Bull Bio (tracers only), Nimrod (tracers only), G&G Bio, Vorsk (tracers only).
- Maximum officially certified bio weight (TÜV): 0.40 grams. Heavier is forbidden, regardless of any "BIO" label.
- Forbidden: all brands not listed, tracers not listed, pure white BBs and BBs heavier than 0.40 grams.
- Only "off-white" is allowed (test: place a BB on a white A4 sheet, a colour difference means off-white).
Forbidden grenade launcher shells
- Airsoft Innovation 40 Mike and Master Mike are forbidden (they fire 150 BBs straight at 30 m).
- TAG rounds (projectiles larger than 6 mm) are forbidden for safety reasons.
Hit rules
- When hit, call out loud and clear "HIT-HIT-HIT".
- With a hi-vis vest: take it off and show it clearly. Without a vest: hand or replica clearly raised.
- Leave the line of fire quickly (the opponent may shoot around you). A hi-vis vest is recommended.
- Shooting at players who are calling their hit is not allowed.
- Dead men don’t speak: after a hit you no longer pass on info or enemy positions.
- Friendly fire: if you shoot a teammate, you take the hit yourself.
- Weapon hit: a hit on your replica counts as a hit. Call "hit on weapon" and switch to your side-arm.
- Knife kill: only with a dummy knife (real knives forbidden). Tap the opponent, who takes a silent hit.
- Headshots are not rewarded and must be avoided. Do not aim at the head when other body parts are visible.
- Blind fire: you must keep sight of your target. Do not shoot through openings smaller than an open hand.
- Pang rule: not an official rule, use common sense. At 5 m or closer only torso or lower, call "PANG" when needed. No automatic panging (1 to 2 seconds between pangs).
Medic, respawn and team bands
- Medic rule: a yellow armband (on one leg). A hit player calls "MEDIC-MEDIC", the medic takes off their band and hands it to the newly hit player, who calls "BACK IN GAME" and becomes the new medic. Maximum one medic revive, a second hit means respawn (max. 3 steps out of the line of fire).
- Respawn: teams are guided to fixed respawns. Do not take off your safety glasses in the respawn, do not shoot from or into a respawn. The respawn rule (1, 3 or 5 players) is announced at the briefing.
- Team bands: since 1 March 2025 players bring their own bands (for sale at every venue, valid on all fields). Ghillie players wear the band visibly on the arm.
Violations
3 marks mean removal without refund and a possible permanent ban with notification to other organisations.
- 1 mark: blind fire, leaving the field or shooting outside it, dry firing in the safe zone, breaking the medic rule, full auto in buildings/platforms, moving objects, a laser on your replica, breaking "dead men don’t speak", leaving litter, wrongly calling "take your hit".
- 2 marks + 30 min cooldown in the safe zone: not taking your hit, a magazine in the safe zone, shooting across the safe zone, shooting at marshalls, foul language/insults, stirring up trouble, DMR/sniper within 15 m, DMR/sniper from inside to inside, deliberate headshots, arguing with the marshall, entering taped-off zones, unauthorised pyro, no joule test, repeated friendly fire, smokes or forbidden pyro inside the fort.
- 3 marks + immediate removal (current and future events): no glasses outside the safe zone, aggressive behaviour, soft or hard drugs, alcohol, exceeding the joule limit in-game (1.21 J or more), destroying objects, theft or attempted theft, glass or steel BBs, non-bio BBs.
Game rules
- Fire mode: in the tunnels single shot only, from tunnel to outside single shot, from outside to inside single shot and full auto (unless it is a single-shot event).
- Base camps are mission locations: you cannot respawn there and must protect them while the mission is active.
- Missions are explained at the briefing or indicated at the respawn. Missions are added or dropped throughout the day.
- Props: when hit, put props down or carry them (always visible). Do not touch props that are not part of your mission. Do not shoot at in-game characters.
Loss, theft and risk
- Crimi Events is not liable for theft, destruction or loss of belongings. Do not bring valuables.
- Entering the event is at your own risk.
- Crimi Events and its staff are not liable for injury or damage, on or off the field or event.
- Crimi Events reserves the right to change these conditions. Questions via info@crimi-events.com or the contact page.
General (applies on every field)
Safety rules
Apply without exception on every field and are repeated during the briefing.
- Approved, rated eye protection is mandatory across the entire playing area.
- Follow the marshalls’ instructions at all times.
- Respect the field’s FPS/joule limits and engagement distances.
- Safe zones are strictly no-fire areas, replicas always secured.
Conditions of participation
A valid registration and a valid ticket are always required.
- Participation is at your own risk. Judge your own fitness and limits honestly.
- A valid ticket and registration are mandatory for every game day.
- Follow the general terms and conditions provided by the organisation.
Replicas and equipment
Replicas may be checked, non-compliant equipment is refused.
- Replicas must stay within the field limits (see per field).
- A chrono/joule check is possible on arrival or during the event.
- Keep your replica secured in all safe zones.
Liability and conduct
Fair play and respect for fellow players, marshalls and the field.
- The organisation may remove participants who break the rules or endanger safety, without refund.
- Liability follows the terms of the organisation and the site owner.
- Minors: participation under the applicable conditions and with the required supervision or consent.
Tickets, privacy and imagery
Practical and administrative arrangements.
- Payment and cancellation terms are stated during ticket sales.
- Photos and videos may be taken during events for promotion, report any objection to the organisation.
- Personal data is processed in accordance with the GDPR (see the privacy statement).
Read the rules? Then you are ready.
Book your spot for the next game day. At the briefing we go over everything together once more.